
I had a puppy (singleton) last year who after a few days post birth had a swollen eye. I was given antibiotic drops for oral use & then when the eye opened had some drops for her. The eye was much later to open than the good eye but when it did open it was all cloudy :(
the swelling did start to go down when she was about 9 weeks old but she remained blind although I do think she could see shapes. She went to a good home and lives a normal life.
Good luck